K. Okuro et al., COBALT CARBONYL MEDIATED CARBONYLATIVE RING EXPANSION REACTIONS OF 3,6-DIHYDRO-2H-1,2-OXAZINES, Tetrahedron letters, 37(16), 1996, pp. 2713-2716
The carbonylative ring expansion reactions of 3,6-dihydro-2H-1,2-oxazi
nes proceeded in the presence ofCo(2)(CO)(8) to give 4,7-dihydro-1,3-o
xazepin-2(3H)-ones in up to 53% yield. Copyright (C) 1996 Elsevier Sci
ence Ltd.